The thing that has kept me with thunderbird are the AdBlockPlus and VirtualIdentity plugin. Does mail.app / opera mail / any other Linux client have something comparable?
(Virtual Identity is a godsend when you have a domain; it lets you set up identities on the fly while writing an email, and manages them beautifully and helpfully for you)
(Virtual Identity is a godsend when you have a domain; it lets you set up identities on the fly while writing an email, and manages them beautifully and helpfully for you)